3 years ago

Hurry please help ASAP !!!

Mathematics

1 answer:

Kobotan [32]3 years ago

6 0

Answer:

vertical angles

Step-by-step explanation:

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Solve 1/2x + 6y = 12 y = x + 15

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Answer:

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Step-by-step explanation:

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What fraction would you use to find 66.66% of 72?

Soloha48 [4]

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3 years ago

Do you A) Mutiply B) Add C) Subtract or D) Divide when using unit rates

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4 years ago

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....................

4vir4ik [10]

Using the ratio 4/2 = 2
and 8/4 = 2

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3 years ago

Explain reasoning!

vova2212 [387]

Answer:

1.) Incorrect,

2.) Correct

Step-by-step explanation:

1.) Let x be the amount of money,

After increasing x by 20%,

New amount of money ( say y )= (100+20)% of x ( i.e. y is 20% more than x )

= 120 % of x

$=\frac{120x}{100}$

⇒ y = 1.20x

$\because \frac{y-x}{y}\times 100=\frac{ 1.20x-x}{1.20x}\times 100$

$=\frac{0.2x}{1.2x}\times 100$

$=\frac{20}{1.2}$

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Thus, x is approximately 16.67% less than y.

2.) First score = 60%,

Second score = x% ( let )

So, Average percentage score = $\frac{60+x}{2}$

If $\frac{60+x}{2}=70$

$60+x=140\implies x = 80$

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4 years ago